GB388755A - Improvements in or relating to short wave radio and other high frequency receivers - Google Patents
Improvements in or relating to short wave radio and other high frequency receiversInfo
- Publication number
- GB388755A GB388755A GB2435931A GB2435931A GB388755A GB 388755 A GB388755 A GB 388755A GB 2435931 A GB2435931 A GB 2435931A GB 2435931 A GB2435931 A GB 2435931A GB 388755 A GB388755 A GB 388755A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- inductances
- valve
- grid
- short wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/163—Special arrangements for the reduction of the damping of resonant circuits of receivers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Catching Or Destruction (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Magnetic Treatment Devices (AREA)
Abstract
388,755. Valve circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and GILL, E. W. B., Merton College, Oxford. Aug. 29, 1931, No. 24359. [Class 40 (v).] An ultra - short wave simple reaction receiver comprises a thermionic valve 1 with its plate 2 connected to its grid 6 by a pair of series inductances 3, 5 separated by a capacity 4 and coupled to, or constituting, a high-frequency pick-up circuit, and reaction is controlled by varying the emission from the cathode 7 up to a point prior to that at which the valve oscillates. The inductances consist of telescopic rods slid into one another to vary the inductive value. A positive potential is applied to the grid 6 by a battery 8 with its negative terminal connected to the cathode, telephones 9 or other output apparatus is connected between the anode side of the variable condenser 4 and the cathode, and the temperature of the cathode is adjusted by rheostat 10. When an aerial external to ,the circuit is used, the aerial is coupled at a potential node on the inductances 3, 5. Reception may be effected at a harmonic of the received wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2435931A GB388755A (en) | 1931-08-29 | 1931-08-29 | Improvements in or relating to short wave radio and other high frequency receivers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2435931A GB388755A (en) | 1931-08-29 | 1931-08-29 | Improvements in or relating to short wave radio and other high frequency receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB388755A true GB388755A (en) | 1933-02-28 |
Family
ID=10210479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2435931A Expired GB388755A (en) | 1931-08-29 | 1931-08-29 | Improvements in or relating to short wave radio and other high frequency receivers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB388755A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2540137A (en) * | 1943-12-14 | 1951-02-06 | Irving H Page | Wide range tuning circuit |
-
1931
- 1931-08-29 GB GB2435931A patent/GB388755A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2540137A (en) * | 1943-12-14 | 1951-02-06 | Irving H Page | Wide range tuning circuit |
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